The Fiberbuilt Bridgewater Heavy Duty Contract Umbrella is the original umbrella with a FiberTeak center pole - a pole which looks and feels like real wood - but is made of strong, weather resistant fiberglass. This is the original, and this is what strength and durability are all about. The Bridgewater line caters to commercial and hospitality applications.All Fiberbuilt Briderwater Umbrellas are manufactured with extremely durable molded nylon joints and end tips, push up and pin lift mechanism, fade resistant marine grade solution dyed acrylic Marine Grade Sunbrella Fabric, and with single vent. There are a number of options available which allow you to combine your specifications with Fiberbuilt''s custom capabilities.Available in 7.5'', 9'', and 11'' diameter Octagonal shape and 6'' and 7.5'' Square shape. Each umbrella is manufactured with a one piece simulated wood pole with a diameter of 1 1/2", a solid wood hub 5" H x 3.5" diameter, and stainless steel hardware. .